Effects of Environmental pH on the Growth of Gastric Cancer Cells
Joint Authors
Zhu, Hong
Li, Wenjie
Zhou, Ying
Shang, Chunyu
Sang, Hui
Source
Gastroenterology Research and Practice
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-09
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Background.
Proton pump inhibitor (PPI) and other acid-suppressing drugs are widely used in the treatment of gastrointestinal ulcer, upper gastrointestinal bleeding, gastritis, and gastric cancer (GC).
About 80% of GC patients receive acid suppression treatment.
PPI suppresses the production of gastric acid by inhibiting the function of H+/K+-ATPase in gastric parietal cells and raises the pH value to achieve therapeutic purposes.
Some studies have found that PPI had a certain antitumor effect in the proliferation and apoptosis of tumor cells.
But the effects of environmental pH on the growth of GC cells and its mechanism are unknown.
Therefore, we hoped to find the effects of culture medium pH on the biological behavior of GC cells by in vitro experiments and provide guidance for the use of acid-suppressing drugs in GC patients.
Aims.
We aimed to observe the effects of pH changes in GC cell culture medium on the cell biological behavior of cancer cells and to analyze the potential mechanisms.
We hoped to find out the effect of acid suppression on the growth of GC cells.
Methods.
The GC cell lines (SGC-7901 and MKN45) were used as the research object.
We adjusted the pH value in the cell culture medium to observe the changes in cell viability (MTT), apoptosis (flow cytometry), and invasion (Transwell) at pH 6, pH 7, and pH 8.
qRT-PCR and western blot (WB) assays were used to determine the expression changes of genes and proteins (mTOR, AKT, Wnt, Glut, and HIF-1α) at pH 6, pH 7, and pH 8.
Results.
The results of MTT showed that the viability of SGC-7901 and MKN45 in the pH 8.0 group was significantly weaker than that in the pH 6.0 or pH 7.0 group (P<0.001).
Flow cytometry results showed that the apoptosis of SGC-7901 and MKN45 in the pH 8.0 group was more obvious than that in the pH 6.0 or pH 7.0 group (P<0.001).
The results of Transwell showed that the invasion ability of SGC-7901 and MKN45 in the pH 8.0 group was significantly weaker than that in the pH 6.0 or pH 7.0 group (P<0.001).
As shown by PCR and WB results, with the increase of pH, the expression of mTOR, AKT, Wnt, Glut, and HIF-1α in SGC-7901 and MKN45 was downregulated (P<0.05).
Conclusions.
Compared with the microacid environment, the microalkaline environment inhibited the viability, invasion, and expression of genes and proteins (mTOR, AKT, Wnt, Glut, and HIF-1α) but promoted the apoptosis of GC cells and thus inhibited the growth of GC.
American Psychological Association (APA)
Li, Wenjie& Zhou, Ying& Shang, Chunyu& Sang, Hui& Zhu, Hong. 2020. Effects of Environmental pH on the Growth of Gastric Cancer Cells. Gastroenterology Research and Practice،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1166751
Modern Language Association (MLA)
Li, Wenjie…[et al.]. Effects of Environmental pH on the Growth of Gastric Cancer Cells. Gastroenterology Research and Practice No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1166751
American Medical Association (AMA)
Li, Wenjie& Zhou, Ying& Shang, Chunyu& Sang, Hui& Zhu, Hong. Effects of Environmental pH on the Growth of Gastric Cancer Cells. Gastroenterology Research and Practice. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1166751
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166751